Built to go the distance. Trainer for iPod nano starts with a wide, stretch armband that adjusts to fit arms up to 19 inches in circumference. A slide-ring adjusts the band to fit then holds it in place. Trainer has a lightweight windowed case to hold your iPod. The perforated case frame is backed with sweat-wicking neoprene, allowing airflow to keep things cool and comfortable. A transparent touch-through window provides access to your Multi-Touch display, so you can adjust volume, navigate playlists, and control your iPod. Keep your iPod protected no matter what the trail or road throws at you, with a Trainer armband.